retry<E> function
Implementation
Future<E> retry<E>(Future<E> Function () action, {int trials = 5, int delay = 100}) async {
try {
return await action();
} catch(e) {
if (trials>0) {
sleep(Duration(milliseconds: delay));
return await retry(action, trials: trials - 1, delay: delay);
} else {
throw e;
}
}
}